n
(organic chemistry) The crown ether 1,4,7,10-tetraoxacyclododecane
n
(organic chemistry) A hydrocarbon, found in coal tar, derived from naphthalene by the addition of a short aliphatic bridge.
n
(biochemistry) Any long-chain di-, tri- and tetra- unsaturated methyl and ethyl ketones that are synthesized by a limited number of haptophyte microalgae; the degree of unsaturation is a function of the water temperature
n
(organic chemistry) Any of a class of hydrocarbons having two double bonds from one carbon atom to two others - R₂C=C=CR₂; especially the parent compound CH₂=C=CH₂ (propadiene).
n
(organic chemistry) The unsaturated hydrocarbon (4E,6Z)-2,6-dimethylocta-2,4,6-triene
n
(organic chemistry) A derivative of androstane that has two double bonds
n
(chemistry, obsolete) An unsaturated monocyclic hydrocarbon with the chemical formula C₉H₁₆.
n
(organic chemistry) The tricyclic triterpenoid (3R,3aR,5aR,7S,9aR,9bR)-3-[(2R,5E)-2-hydroxy-6,10-dimethylundeca-5,9-dien-2-yl]-3a,6,6,9a-tetramethyl-1,2,3,4,5,5a,7,8,9,9b-decahydrocyclopenta[a]naphthalen-7-ol
n
(organic chemistry) The sugar alcohol (2R,4R)-pentane-1,2,3,4,5-pentol
n
(chemistry) any hydrocarbon, normally a transient species, derived from an arene by removal of two hydrogen atoms from adjacent carbon atoms, and thus possessing a formal triple bond; the simplest is benzyne
n
(organic chemistry) Any of the dark organic constituents of crude oils and bitumen that are soluble in aromatic solvents but not in aliphatic ones; they are polycyclic aromatic compounds (composed of fused benzene rings) with aliphatic side chains
n
(organic chemistry) Any compound based on an acene in which one or more carbon atoms (normally a >CH group) is replaced by a nitrogen atom
n
(chemistry) Any bicyclic alkene having a double bond, each trans position of which is joined by a chain of carbon atoms.
n
(organic chemistry) Any bicyclic hydrocarbon having seven carbon atoms and two double bonds, but especially the one formed from 1,3-cycloheptadiene by establishing a bridge between carbon atoms 5 and 7
n
(chemistry) Abbreviation of butyl. [(organic chemistry) Any of four isomeric univalent hydrocarbon radicals, C₄H₉, formally derived from butane by the loss of a hydrogen atom.]
n
(organic chemistry) decanal
n
(organic chemistry) An oily hydrocarbon of the ethylene series, obtained from spermaceti.
n
(organic chemistry) The univalent hexadecyl radical C₁₆H₃₃- present in many waxes.
n
(organic chemistry) The waxy aliphatic primary alcohol 1-hexadecanol, used in cosmetics etc.
n
(organic chemistry) The unsaturated aliphatic aldehyde CH₃-CH=CH-CHO that is used in organic synthesis
n
(organic chemistry) Any hydrocarbon (or derivative) having three or more cumulative double bonds; e.g., R₂C=C=C=CR₂.
n
(organic chemistry) A cyclic oxocarbon derived from cyclobutane
n
(organic chemistry) The saturated alicyclic hydrocarbon that has ten carbon atoms
n
(organic chemistry) The alicyclic ketone that has ten carbon atoms
n
(organic chemistry) The cycloalkane having twelve carbon atoms; and derivative of this compound
n
(organic chemistry) The alicyclic ketone having seventeen carbon atoms.
n
(organic chemistry) Any of several isomeric unsaturated alicyclic hydrocarbons having seven carbon atoms and two double bonds; any derivative of such compound
n
(organic chemistry) The unsaturated alicyclic hydrocarbon containing seven carbon atoms and one double bond; any derivative of this compound.
n
(organic chemistry) The alicyclic ketone having sixteen carbon atoms
n
(organic chemistry) An alicyclic ketone that has sixteen carbon atoms and one double bond
n
(organic chemistry) Synonym of cyclohexanecarboxylic acid
n
(biochemistry) Any cyclic sugar alcohol having six carbon atoms
n
(organic chemistry) An unsaturated alicyclic hydrocarbon having eight carbon atoms and three double bonds; any derivative of this compound
n
(organic chemistry) A saturated alicyclic ketone having fifteen carbon atoms in the ring; it is the main odoriferous component of musk
n
(organic chemistry) An unsaturated derivative of a dammarane
n
(organic chemistry) A radical (or cation) derived from a dammarene
n
(organic chemistry) Any of several isomeric unsaturated alkenes having ten carbon atoms and two double bonds
n
(organic chemistry) A straight chain fatty alcohol with the chemical formula C₁₀H₂₁(OH), used in manufacture of plasticizers, lubricants, surfactants and solvents.
n
(organic chemistry) Any aliphatic ketone that has ten carbon atoms
n
(organic chemistry) Any aliphatic hydrocarbon that has ten carbon atoms and five double bonds
n
(organic chemistry) Any univalent radical derived from a decapentene
n
(organic chemistry) Any of several isomeric unsaturated alkenes having ten carbon atoms and four double bonds
n
(organic chemistry) Any of many isomeric alkenes having ten carbon atoms and three double bonds; several of their derivatives are used in perfumery
n
(organic chemistry) Any of many isomeric monoalkenes derived from a decane
n
(organic chemistry) Any of several isomeric acetylenes having ten carbon atoms
n
(organic chemistry) Synonym of decanal (especially n-decanal)
n
(organic chemistry) Any of several isomeric acetylenes having ten carbon atoms, but especially 1-decyne
n
(organic chemistry) Eicosane.
n
(organic chemistry) A benzene ring which is modified by replacing each of two diametrically opposed hydrogen atoms with COOCH₃.
n
(organic chemistry) The aromatic ketone diphenylmethanone.
n
(organic chemistry) Any open-chain equivalent of a crown ether that has a -O-CH₂-CH₂-O-CH₂-CH₂-O- group
n
(organic chemistry) Any aliphatic alcohol derived from a dodecane; but especially lauryl alcohol
n
(organic chemistry) Any monoalkene that has twelve carbon atoms
n
(chemistry) the aliphatic univalent radical C₁₂H₂₅-; lauryl
n
(organic chemistry) Any of very many isomers of the aliphatic hydrocarbon having one hundred and thirty-two carbon atoms, but especially n-dotriacontahectane CH₃(CH₂)₁₃₀CH₃
n
(organic chemistry) The aliphatic aldehyde that has 32 carbon atoms (CH₃(CH₂)₃₀CHO)
n
(organic chemistry) Any of very many isomers of the aliphatic hydrocarbon having thirty-two carbon atoms, but especially n-dotriacontane CH₃(CH₂)₃₀CH₃
n
(organic chemistry) Synonym of dodecanal (especially n-dodecanal)
n
(organic chemistry) Any of several isomeric unsaturated alkenes having twenty carbon atoms and two double bonds
n
(organic chemistry) any of the 366,319 isomers of the aliphatic hydrocarbon having the chemical formula C₂₀H₄₂, but especially n-eicosane CH₃(CH₂)₁₈CH₃
n
(organic chemistry) any of very many isomers of the unsaturated aliphatic hydrocarbon having the chemical formula C₂₀H₄₀, but especially 2-eicosene
n
Alternative form of eicosane [(organic chemistry) any of the 366,319 isomers of the aliphatic hydrocarbon having the chemical formula C₂₀H₄₂, but especially n-eicosane CH₃(CH₂)₁₈CH₃]
n
(chemistry) The more liquid or volatile portion of certain oily substances, as distinguished from stearoptene, the more solid parts.
n
Alternative form of hendecane [(organic chemistry) Any saturated aliphatic hydrocarbon, C₁₁H₂₄, having eleven carbon atoms.]
n
(organic chemistry) An organic compound containing a hydroxyl group bonded to a carbon atom which is doubly bonded to another carbon atom.
n
(organic chemistry) Any ketone having a neighbouring double bond
n
(organic chemistry) An unsaturated aliphatic hydrocarbon that has 21 carbon atoms and two double bonds, but especially 3,6-heneicosadiene
n
(organic chemistry) Any of very many isomers of the aliphatic hydrocarbon having twenty-one carbon atoms, but especially n-heneicosane CH₃(CH₂)₁₉CH₃
n
(organic chemistry) Any unsaturated aliphatic hydrocarbon that has thirty-one carbon atoms and two double bonds
n
(chemistry) A solid, long-chain alkane hydrocarbon with the structural formula CH₃(CH₂)₂₉CH₃, found in a variety of plants and in beeswax.
n
(organic chemistry) Any unsaturated aliphatic hydrocarbon that has 31 carbon atoms and one double bond, but especially 1-hentriacontene
n
(organic chemistry) Any of very many isomeric dialkenes having twenty-seven carbon atoms and two double bonds, but especially (Z,Z) 7,11-heptacosadiene which is a courtship pheromone in fruit flies
n
(organic chemistry) Any of very many isomers of the saturated aliphatic hydrocarbon having twenty-seven carbon atoms, but especially n-heptacosane (CH₃(CH₂)₂₅CH₃)
n
(organic chemistry) Any unsaturated aliphatic hydrocarbon that has twenty-seven carbon atoms and one double bond
n
(organic chemistry) Any aliphatic hydrocarbon that has seventeen carbon atoms and two double bonds
n
(organic chemistry) An aliphatic aldehyde that has seventeen carbon atoms
n
(organic chemistry) The sphinganine that has a chain of seventeen carbon atoms
n
(organic chemistry) Any aliphatic hydrocarbon that has seventeen carbon atoms and three double bonds
n
(organic chemistry) Any of very many isomeric univalent hydrocarbon radicals, C₁₇H₃₅, formally derived from heptadecane by the loss of a hydrogen atom.
n
(organic chemistry) Any unsaturated aliphatic hydrocarbon that has seven carbon atoms and two double bonds
n
(organic chemistry) An unsaturated aliphatic alcohol that has seven carbon atoms and two double bonds
n
(organic chemistry) Any unsaturated aliphatic hydrocarbon having seven double bonds
n
(organic chemistry) The aliphatic hydrocarbon with the assigned cetane number of zero.
n
(organic chemistry) The alkyl aldehyde that has seven carbon atoms; it has a strong fruity odour, and is used in flavouring and perfumes
n
(organic chemistry) Any organic compound in which substituents are attached to each end of a heptanone chain
n
(organic chemistry) Any of many isomers of the saturated aliphatic alcohol having seven carbon atoms
n
(organic chemistry) Any of three isomeric ketones derived from heptane
n
(organic chemistry, especially in combination) The univalent radical derived from heptanoic acid by loss of the hydroxy group
n
(organic chemistry) In the nomenclature of complex organic compounds, any linear phane containing seven nodes (or superatoms)
n
(organic chemistry, in combination) A derivative of heptene where the next name part starts with a vowel, often "-one" or "-ol".
n
(organic chemistry) Any of many isomers of the alkene having seven carbon atoms and one double bond; a mixture of such isomers used in lubricants etc
n
(organic chemistry, especially in combination) A radical derived from a heptene
n
(organic chemistry) Any of a series of unsaturated metameric hydrocarbons, C₇H₁₂, of the acetylene series.
n
(organic chemistry) Any of many isomeric univalent hydrocarbon radicals, C₇H₁₅, formally derived from heptane by the loss of a hydrogen atom.
n
(organic chemistry) A colourless liquid hydrocarbon, C₇H₁₄, of the ethylene series, or any of its isomers.
n
(organic chemistry) an unsaturated aldehyde, CH₃CH=CH-CH=CH-CHO, used in the manufacture of perfumes etc
n
(organic chemistry) Any of very many isomeric aliphatic alcohols having 26 carbon atoms, but especially the unbranched primary alcohol 1-hexacosanol.
n
(organic chemistry) Any unsaturated aliphatic hydrocarbon that has twenty-six carbon atoms and one double bond, but especially 1-hexacosene or 9-hexacosene
n
(organic chemistry) Any monounsaturated fatty acid that has 26 carbon atoms
n
(organic chemistry) Any unsaturated aliphatic aldehyde containing 16 carbon atoms and 2 double bonds, but especially 10,12-hexadecadienal which is a component of the female sex pheromone of some insects
n
(organic chemistry) Any of the very many isomeric aliphatic hydrocarbons of general formula C₁₆H₃₄
n
(organic chemistry) Any aliphatic alcohol derived from hexadecane, but especially cetyl alcohol
n
(organic chemistry) Any aliphatic ketone that has sixteen carbon atoms
n
(organic chemistry) The univalent radical derived from hexadecane
n
(organic chemistry) Any aliphatic acetylene that has sixteen carbon atoms
n
(organic chemistry) Any of several isomers of the alkene having six carbon atoms and two double bonds
n
(organic chemistry) Any alkene having six double bonds
n
(organic chemistry) Any saturated aliphatic aldehyde having six carbon atoms, but especially n-hexanal
n
(organic chemistry) Any of five isomeric aliphatic hydrocarbons, C₆H₁₄. They are colorless, volatile liquids.
n
(organic chemistry) Any of several isomeric diols derived from hexane, but especially 1,6-hexanediol that has many industrial uses
n
(organic chemistry) Any diketone derived from a hexane
n
(organic chemistry) Any of many isomers of the saturated aliphatic alcohol having six carbon atoms
n
(organic chemistry) Any of several isomers of the saturated aliphatic ketone having six carbon atoms.
n
(organic chemistry) Any hexahydroxy alcohol
n
(organic chemistry) Any of innumerable isomers of the saturated aliphatic hydrocarbon C₃₆H₇₄, having thirty-six carbon atoms; but especially the straight-chain isomer that is used in solid-state applications.
n
(organic chemistry) Any of several isomeric, aliphatic trienes derived from a hexane.
n
(organic chemistry) The essential radical, C₁₆H₃₃, of hecdecane.
n
(organic chemistry) Any of several isomeric unsaturated aliphatic aldehydes having six carbon atoms and one double bond
n
(organic chemistry) Any of several isomers of the alkene having six carbon atoms and one double bond
n
(organic chemistry) Any aliphatic alcohol that has six carbon atoms and one double bond
n
(biochemistry) Any dialdose having six carbon atoms
n
(organic chemistry) Any of many isomeric univalent hydrocarbon radicals, C₆H₁₃, formally derived from hexane by the loss of a hydrogen atom
n
(chemistry) Any of several isomers of hexylene proper.
n
(organic chemistry) Any aliphatic hydrocarbon having six triple bonds.
n
(organic chemistry) Any compound derived from a lignane by adding extra carbon atoms in a ring or sidechain
n
(organic chemistry) A hopanoid hydrocarbon
n
(organic chemistry) The bicyclic alkane bicyclo[2.1.0]pentane (C₅H₈).
n
Alternative form of eicosane [(organic chemistry) any of the 366,319 isomers of the aliphatic hydrocarbon having the chemical formula C₂₀H₄₂, but especially n-eicosane CH₃(CH₂)₁₈CH₃]
n
(chemistry) Any isomer of octane except the normal, straight-chain one; especially 2,2,4-trimethylpentane.
n
(organic chemistry) A malabaricane whose three carbon rings are connected in trans-syn-trans conformation.
n
(organic chemistry) any isomer of n-octane; especially 2,2,4-trimethylpentane, used as a reference in the determination of the octane number of fuel
n
(organic chemistry) Any of several octyl isomers that have a sidechain, but especially 6-methyl-heptyl
n
(organic chemistry) An aliphatic hydrocarbon with the chemical structure CH₂CH₂CH(CH₃)₂; isomeric with pentane and neopentane.
n
(organic chemistry) Any isomer of n-pentanol, but especially amyl alcohol
n
(organic chemistry) An unsaturated hydrocarbon, C₅H₈, that is readily polymerized; natural rubber (caoutchouc) is cis-1,4-polyisoprene, and trans-1,4-polyisoprene is present in gutta-percha and balata; it is the structural basis for the terpenes.
n
(organic chemistry) Any lactone that is also a ketone
n
(organic chemistry, especially in combination) A univalent radical formally derived from lipoic acid by removal of the hydroxyl group
adj
(organic chemistry, of an aliphatic compound) Having a chain of between about six and twelve carbon atoms
n
(organic chemistry) An unsaturated hydrocarbon, C₃₀H₆₀, of the ethylene series, obtained from beeswax as a white, scaly, crystalline wax.
n
(organic chemistry) Any of a number of isomeric saturated cyclic monoterpene hydrocarbons
n
(organic chemistry) Any of three isomeric carboxylic acids related to hydroxybenzoic acids by replacing the hydroxy group with a thiol
n
(organic chemistry) The saturated aliphatic hydrocarbon (CH₃(CH₂)₄CH₃).
n
(organic chemistry) The saturated aliphatic hydrocarbon (CH₃(CH₂)₆CH₃).
n
(organic chemistry) The saturated aliphatic hydrocarbon (CH₃(CH₂)₃CH₃).
n
(organic chemistry) The aliphatic alkane 2,2-dimethylpropane; isomeric with pentane and isopentane
n
(organic chemistry) Any saturated aliphatic hydrocarbon that has 19 carbon atoms, but especially n-nonacontane
n
(organic chemistry) Any of very many isomeric alkenes having nineteen carbon atoms
n
(organic chemistry) Any of several isomeric unsaturated hydrocarbons having nine carbon atoms and two double bonds
n
(organic chemistry) Any of vary many isomeric alkanes, of general formula C₉H₂₀, having 9 carbon atoms.
n
(organic chemistry) Any aliphatic alcohol derived from a nonane
n
(organic chemistry) Any of several isomeric unsaturated aliphatic hydrocarbonc that have nine carbon atoms and three double bonds, but especially 1,3,7-nonatriene
n
(organic chemistry) Any unsaturated aliphatic aldehyde that has nine carbon atoms, but especially 2-nonenal
n
(chemistry) Any of a series of metameric unsaturated hydrocarbons, C₉H₁₈, of the ethylene series.
n
(organic chemistry) The unsaturated, bicyclic hydrocarbon bicyclo[2.2.1]hepta-2,5-diene that is used in the synthesis of complex polycyclic hydrocarbons.
n
(organic chemistry) A derivative of pregnane with a shorter sidechain
n
(organic chemistry) The aliphatic aldehyde that has 18 carbon atoms
n
(organic chemistry) Any of very many isomeric alkanes having the formula C₁₈H₃₈, but especially n-octadecane CH₃(CH₂)₁₆CH₃.
n
(organic chemistry) The aliphatic thiol that has 18 carbon atoms
n
(organic chemistry) Any of many isomeric aliphatic alcohols that have eighteen carbon atoms and a double bond
n
(organic chemistry) Any of several isomeric unsaturated aliphatic aldehyde having eight carbon atoms and two double bonds
n
(organic chemistry) Any of several isomeric dienes having eight carbon atoms
n
(organic chemistry) A hypothetical paddlane derivative, in the form of an octahedron, that would be an allotrope of carbon
n
(organic chemistry) The saturated aliphatic aldehyde having eight carbon atoms
n
(organic chemistry) Any of many isomers of the saturated aliphatic alcohol having eight carbon atoms, but especially the simple primary alcohol n-octanol; its esters are used in perfumery
n
(organic chemistry) Any aliphatic ketone that has eight carbon atoms
n
(organic chemistry) The aliphatic saturated hydrocarbon having 38 carbon atoms, C₃₈H₇₈
n
(organic chemistry) Any of many isomeric alkenes having eight carbon atoms and one double bond; some of them are used in the manufacture of polymers
n
(organic chemistry) A colourless liquid hydrocarbon, 1,3 dimethylcyclohexane, occurring in petroleum.
n
(organic chemistry) Any of very many isomeric univalent hydrocarbon radicals, C₈H₁₇, formally derived from octane by the loss of a hydrogen atom
n
(organic chemistry) octene
n
(organic chemistry) Any of many isomeric alkynes having eight carbon atoms and one triple bond
n
(organic chemistry) A polycyclic aromatic hydrocarbon; the acene containing five fused rings.
n
(organic chemistry) Any of very many isomeric forms of an unsaturated aliphatic hydrocarbon having 25 carbon atoms and two double bonds
n
(organic chemistry) Any of very many isomeric forms of a saturated aliphatic hydrocarbon having 25 carbon atoms, but especially n-pentacosane CH₃(CH₂)₂₃CH₃ that is found in beeswax
n
(organic chemistry) Any of very many isomeric forms of an unsaturated aliphatic hydrocarbon having 25 carbon atoms and one double bond
n
(organic chemistry) Any of very many isomeric univalent hydrocarbon radicals, C₁₅H₃₁, formally derived from pentadecane by the loss of a hydrogen atom
n
(organic chemistry) Either of two isomeric dienes derived from pentane
n
(organic chemistry) Any aliphatic ketone that has five carbon atoms and two double bonds
n
A chemical compound, C₁₈H₁₃O.
n
(organic chemistry) A triquinane sesquiterpene related to pentalenic acid
n
(chemistry) An alkyl aldehyde with molecular formula C₅H₁₀O, used in flavourings, resin chemistry, and rubber accelerators.
n
(organic chemistry) An aliphatic hydrocarbon of chemical formula C₅H₁₂; either of the three isomers n-pentane, methyl-butane (isopentane), and di-methyl-propane (neopentane); volatile liquids under normal conditions.
n
(organic chemistry) Any of three organic compounds containing five carbons and a ketone functional group.
n
(organic chemistry) Any of several isomeric alkenes having five carbon atoms and one double bond
n
(organic chemistry) Any of several isomeric derivatives of pentanol having a single carbon-carbon double bond
n
(organic chemistry) Any of several isomeric acetylenes having five carbon atoms and one triple bond
n
(biochemistry) Any sugar alcohol having five carbon atoms
n
(organic chemistry) Any of several isomeric alkynes having five carbon atoms and one triple bond
n
(organic chemistry) cycloheptanone
n
(organic chemistry) An alkane hydrocarbon with the structural formula CH₃(CH₂)₂₂CH₃.
n
(organic chemistry) Any of very many isomeric unsaturated aliphatic hydrocarbons that have 24 carbon atoms and one double bond
n
(organic chemistry) Any of very many isomers of the aliphatic hydrocarbon having fourteen carbon atoms (C₁₄H₃₀)
n
(countable, organic chemistry) Any aliphaticalcohol that has four double bonds
n
Alternative spelling of tetracosane [(organic chemistry) An alkane hydrocarbon with the structural formula CH₃(CH₂)₂₂CH₃.]
n
(organic chemistry) Any of very many isomers of a tetramethyl derivative of pentadecane, but especially pristane (2,6,10,14-tetramethylpentadecane).
n
(organic chemistry) Any of very many isomers of the aliphatic hydrocarbon having forty-four carbon atoms, but especially n-tetratetracontane CH₃(CH₂)₄₂CH₃
n
(organic chemistry) Any of very many isomers of the aliphatic hydrocarbon having thirty carbon atoms, but especially n-triacontane CH₃(CH₂)₂₈CH₃
n
(organic chemistry) Any aliphatic alcohol that has twenty-three carbon atoms
n
(organic chemistry) Any of very many isomeric saturated aliphatic hydrocarbons having thirteen carbon atoms, but especially n-tridecane, CH₃(CH₂)₁₁CH₃
n
(organic chemistry) Any aliphatic ketone, formally derived from tridecane, containing thirteen carbon atoms
n
(organic chemistry) Any of very many isomeric unsaturated hydrocarbons that have thirty-three carbon atoms and two double bonds
n
(organic chemistry) Any of very many isomers of the aliphatic hydrocarbon having thirty-three carbon atoms, but especially n-tritriacontane CH₃(CH₂)₃₁CH₃
n
(organic chemistry) The saturated aliphatic aldehyde having eleven carbon atoms
n
(organic chemistry) Any of many isomers of the aliphatic hydrocarbon having 11 carbon atoms, but especially n-undecane CH₃(CH₂)₉CH₃
n
(organic chemistry) Synonym of undecanal
n
(organic chemistry) Any unsaturated compound, but especially an unsaturated hydrocarbon in the oil refining industry
adj
Alternative form of very-long-chain [(organic chemistry, of an aliphatic compound) Having a chain of more than about eighteen carbon atoms.]
adj
(organic chemistry, of an aliphatic compound) Having a chain of more than about eighteen carbon atoms.
n
(organic chemistry) The tetraterpenoid hydrocarbon trimethyltetracyclohexadecane
Note: Concept clusters like the one above are an experimental OneLook
feature. We've grouped words and phrases into thousands of clusters
based on a statistical analysis of how they are used in writing. Some
of the words and concepts may be vulgar or offensive. The names of the
clusters were written automatically and may not precisely describe
every word within the cluster; furthermore, the clusters may be
missing some entries that you'd normally associate with their
names. Click on a word to look it up on OneLook.
Our daily word games Threepeat and Compound Your Joy are going strong. Bookmark and enjoy!
Today's secret word is 7 letters and means "No longer existing; died out." Can you find it?